17' TC250 Jetting Help

ar15

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ar15 11/21/2020 9:56am

11/21/2020 9:56am

sdhuskyrider wrote:

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps...

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps are pretty steady at 70*F right now. Bike is blubbery down low but crisp mid and up. I checked my float level which is 6-7mm per Mikuni spec and I dropped the pilot from 42.5 to 40 but it didn't do much. Plug reading was dark and sooty at end of the day. Air screw not doing very much. Going to drop to a 37.5 pilot today and up the main to 450 to make up for it. I have read some folks adjusting float to 8-9mm. Does that work? I have also read about correcting squish which seems to help with jetting issues down low. Reed cage looks good btw.

Duece90Six wrote:

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough...

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough. I work at a husky dealership as well and your best bet it to get a lectron carb. Long story short, the stock carbs in these bikes suck!

I use the setting that Jeffoff uses in our TMX carb. Makes a BIG difference over the factory setting.

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AJ565

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AJ565 11/22/2020 5:07pm

11/22/2020 5:07pm Edited Date/Time 11/22/2020 5:08pm

sdhuskyrider wrote:

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps...

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps are pretty steady at 70*F right now. Bike is blubbery down low but crisp mid and up. I checked my float level which is 6-7mm per Mikuni spec and I dropped the pilot from 42.5 to 40 but it didn't do much. Plug reading was dark and sooty at end of the day. Air screw not doing very much. Going to drop to a 37.5 pilot today and up the main to 450 to make up for it. I have read some folks adjusting float to 8-9mm. Does that work? I have also read about correcting squish which seems to help with jetting issues down low. Reed cage looks good btw.

Duece90Six wrote:

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough...

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough. I work at a husky dealership as well and your best bet it to get a lectron carb. Long story short, the stock carbs in these bikes suck!

Your guys that “know” apparently don’t know. We’ve had the jetting figured out for a few years now and turned these bikes into rockets. These are amazing when jetted right. I never have to mess with anything more then the air screw.

https://m.vitalmx.com/forums/Tech-Help-Race-Shop,42/KTM-HUS-125-150-250…

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opyguy

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opyguy 11/22/2020 7:28pm

11/22/2020 7:28pm

Suzuki 17-62 needle or aj’s settings
I’d try the needle first as it’s easy to change and if u don’t like it do aj’s mods
I’ve done both and both work great.

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sdhuskyrider

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San Diego, CA, USA

sdhuskyrider 11/23/2020 9:19am

11/23/2020 9:19am

sdhuskyrider wrote:

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps...

Has anyone nailed jetting specs for the 17' Huskatoom TC250? I have been hitting Pala in Socal which is about 500' above sea level and temps are pretty steady at 70*F right now. Bike is blubbery down low but crisp mid and up. I checked my float level which is 6-7mm per Mikuni spec and I dropped the pilot from 42.5 to 40 but it didn't do much. Plug reading was dark and sooty at end of the day. Air screw not doing very much. Going to drop to a 37.5 pilot today and up the main to 450 to make up for it. I have read some folks adjusting float to 8-9mm. Does that work? I have also read about correcting squish which seems to help with jetting issues down low. Reed cage looks good btw.

Duece90Six wrote:

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough...

I know lots of guy that know a lot when it comes to jetting and we have all tried to dial these bikes and it’s tough. I work at a husky dealership as well and your best bet it to get a lectron carb. Long story short, the stock carbs in these bikes suck!

My TC250 runs perfect 👌 Not sure what you guys have and haven't tried but the specs posted in this thread are money.